WELL · 42-279-30366 · DISTRICT 8
Twilley Unit #1
Lamb County · Horizontal
Twilley Unit #1 (API 42-279-30366) is a permitted horizontal well in Lamb County filed by Occidental Permian Ltd.; no completion report is on file yet.
The RRC has issued 3 drilling permits (amended once) between 2002 and 2009, permitted to 7,500 ft.
Completion filings report 7 formation tops, including Rustler, Yates, Queen, San Andres.
Its lease has reported 317K barrels of oil and 123K mcf of gas since October 2002, last reporting in July 2026.
Operator of record
Houston, TX · P-5 Y, filed Dec 4, 2025 · 6,251 permits on file · (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Occidental Permian Ltd.through Apr 2026 |
| Latest permit | Occidental Permian Ltd.Aug 6, 2009 |
- 7,500
- total depth, ft
- 4
- permits on file
- Aug 6, 2009
- last permit issued
- —
- completed
- 317K
- cumulative oil, bbl
- 123K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2002 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Twilley Unit O-11-68503 | Anton-Irish (Wolfcamp) | Occidental Permian Ltd. | 1 | 317K | 123K | Oct 2002 – Jul 2026 |
Oil, barrels lease total
Last 12 months 3,065 · prior 12 3,020(+1%)
Gas, mcf lease total
Last 12 months 9,841 · prior 12 7,587(+30%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Occidental Permian Ltd.Oct 2002 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 683603-99 | Recompletion | Occidental Permian Ltd. | Jul 29, 2009 | Aug 6, 2009 | — | 7,500 |
| 665411-98 | Recompletion | Occidental Permian Ltd. | Jul 23, 2008 | Jul 18, 2008 | Sep 28, 2008 | 7,500 |
| 665411-99 | Recompletion | Occidental Permian Ltd. | Jun 26, 2008 | Jul 18, 2008 | — | 7,000 |
| 523586-99 | Drill | Occidental Permian Ltd. | Sep 11, 2002 | Sep 11, 2002 | Sep 17, 2002 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-68503 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,438 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,650 | 6,700 | Open hole |
| 6,650 | 6,768 | Open hole |
| — | 7,499 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,614 | 12.25 | 740 S |
| 5.5 | 6,650 | 7.875 | 1,350 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Aug 4, 2009 | May 4, 2009 | Yes |
| 00 | Feb 23, 2006 | Sep 2, 2005 | — |
| 00 | Dec 12, 2002 | Nov 8, 2002 | Yes |
| 00 | Nov 19, 2002 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-279-30366 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-279-30366 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/27930366, documented in the API reference.